Ring-roll crusher and pulverizer.



H. J. SHELTON.

RING'ROLL GBUSHER AND PULVERIZER.

APPLICATION FILED APR.2B, 1914.

1,1 32,042, Patented Mar. 16, 1915.

2 SHBETS-SHEET 1.

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H. J, SHELTON. RING ROLL GRUSHBR AND PULVERIZER.

APPLICATION TILED APR.28, 1914.

Patented Mar. 16, 1915.

2 SHEETSSHEET 2.

f wt HENRY J. SHELTON, OF ST. LOUIS, MISSOURI.

RING-ROLL GBUSHER AND PULVERIZER.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filed April 28, 1914. Serial No. 834,958.

To all whom it may concern Be it known that I, HENRY J. Srrnn'ron, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Ring-Roll Crushers and Pulverizers, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to an improved ringroll crusher and pulverizer, and consists in the novel construction hereinafter described and specifically designated in the appended claims.

The object of my invention is to provide an improved ring-roll crusher and pulverizer which shall be more eificient than machines of this class heretofore known.

In the drawings, Figure 1 is a sectional front elevation of a machine embodying my invention; Fig. 2 is a side elevation of my improved wabbling ring-roll detached; Fig. 3 is a sectional side elevation of the machine taken on the line 33 of Fig. 1; and Fig. l is a sectional front elevation of the machine taken on the line 4c4: of Fig. 3.

The numeral 6 indicates the casing supported by a suitable frame-work 7 and having a front door 8 mounted upon suitable hinges 9, said door being held in a closed position by means of a suitable latch-bolt 10.

11 is a bearing located centrally of said casing in the rear thereof and inwhich bearing is mounted to revolve the hub 12 of the ring roll 13, said hub being keyed upon a main shaft 14 by means of a key 15. (See Fig. 3). Said shaft 14 is mounted in suitable bearings such as 16, and has fixed upon it a gear wheel 17 with the teeth of which meshes the teeth of a pinion 18 mounted upon a drive shaft 19.

The ring roll 13 may be connected to its hub 12 by means of a disk, or by means of a suitable spider or spokes 20, as herein shown. The inner periphery of said ring roll constitutes what I term a wabbling conical grinding-surface 21 in the form of an internal groove located at other than a right angle to the axis of said drive shaft 1-1.

The numeral 22 indicates a series of conical grinding rolls, the outer peripheries of which are adapted to engage the material to be crushed or ground in the space between the peripheries of said rolls and the said wabbling grinding surface 21. Said rolls are preferably arranged in a relatively triangular position within the said casing 6 and are mounted to revolve and to slide axially upon eccentric pintles 23 which are formed upon the inner ends of short shafts 24: mounted in eccentric-bearings 245 which are themselves clamped in suitable bearings 25 carried by the hinged front door 8.

26 indicates collars for the hubs 27 of said rolls 22, said collars being in contact with the inner surface of the said door 8, to prevent dust or other pulverulent material from passing from the casing into said bearings, 25.

The front ends of said short shafts 2st project free a short distance beyond the front ends of said eccentric bearings 24 and each has fixed upon it an adjusting-arm 28 which presses against a coil spring 29 for the purpose of rocking said arms 28 and said short shafts 24, as well as said eccentric pintles 23 to yieldingly retain the grinding surface of said rolls 22 in contact with the material during the grinding or crushing operation. The said springs 29 are adjusted by means of screws 30 mounted in bear ing brackets 31 upon the front of said hinged door 8, the free ends of said screws being provided with suitable hand wheels 32. The front ends of said eccentric bearings 24 have fixed thereupon an adjustingarm 33, whereby when the bolts 33 of said bearings 25 are loosened up the said rolls 22 may quickly be withdrawn from the said ring when the said hinged door is to be opened.

The numeral 34 indicates a feed hopper mounted upon the front of said hinged door 8 and communicating with a feed spout or passage 35 located upon the interior of said door and extending to a central point, in order to distribute the material to each of the rolls and said wabbling grinding surface during operation.

In operation, said hinged door 8 is closed as shown in Fig. 1, and the material to be crushed or ground is fed through the said hopper 34 and spout 35, the said ring roll 13 having been previously started by applying power to the shaft 19, the material being crushed or ground between the opposing wabbling grinding surface 21 of said ring 13 and the conical. grinding surface of the said rolls 22. The said Wabbling grinding surface 21 operates in practice much more efliciently than would a common ring roll devoid of a Wabbling grinding surface. The material, after being crushed orground, drops out of the casing through the discharge opening 36 in the base of said casing. There is ample room for axial play between the Walls of said wabbling grinding-surface 21 and the ends of said rolls 22, so that during the grinding operation mentioned *the material will be simultaneously subjected to a double attrition, produced by the rolling action of said rolls 22 and by the simultaneous aXial movement of the said rolls and said wabbling grinding surface 21. It will be understood that during the grinding operation the rolls 22 are separated more or less from the said wabbling grinding surface 21, thereby permitting ample axial movement of said wabbling grinding surface in the manner previously described.

It is apparent that minor changes in the construction, arrangement and combination of the several parts of my invention can be made and substituted by a skilled workman for the parts herein shown and described, without departing from the essential :principle of my invention.

I claim:

1. A ring roll grinding mill, constructed with a suitable casing, a ring-roll having on its internal periphery a wabbling grinding surface, and a roll adapted to want with said wabbl-ing grinding surface.

2. A ring roll grinding mill, constructed with a'suitable casing, a ring-roll having on its internal periphery a conical wabbling grinding surface, and a conical roll adapted to coact with said conical Wabbli'ng grinding surface.

3. A ring roll grinding mill, constructed with a suitable casing, a ring-roll having on its internal periphery a conical Wabblin'g grinding surface, and a series of yieldinglygrinding surface, -a series of conical rolls adapted to coact with said conical wabbl'ing grinding surface, and means arranged to yieldin'gly press said rolls toward said conical Wabbling grinding-surface.

6. A ring-roll grinding-mill, constructed with a suitable frame, a ring-roll having on its internal periphery a wabbling annular grinding surface mounted on said frame, ro lls mounted to grind the material incontact with said wabbling-grinding-surface, and suitable adjusting means whereby said rolls may be quickly withdrawn from said wabb'ling grinding-surface.

7. A ring-roll grinding-mill, comprising a suitable frame, a suitable casing, a ring roll, eccentric-pintles, rolls mounted on said eccentric-pintles to grind material in con tact with said ring-roll, and eccentric-bearings in which said eccentric-pintles are mounted.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

HENRY J. SHELTON. Witnesses L. WVALLACE, JOHN 'C. HIsDoN.

001mm 0! this patent may 'be obtained for five c'ents each, by addressing the Commissioner of Patents.

Washington, D. C. 

